4. Mr Hadawi is setting up a new office for his car-hire business. He needs to equip the office with a computer that will be used all day by his employee. Mr Hadawi wishes to ensure the health and safety of his employee.

Describe two features that Mr Hadawi should consider when buying and installing each of the following:

a) the screen

b) the chair

c) the keyboard

d) the desk and surroundings. (8)